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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2014-10-02 16:31:08 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-10-02 17:06:26 +0100 |
| commit | 2a285299446cccbaf9ba47403e8f2ce578cd1ad1 (patch) | |
| tree | fa32c04d7af0a1685b36bc646f6c317912853362 /drivers/spi/spi-dw-mid.c | |
| parent | 15ee3be78b017ee9d697fe59d45cdfbb35d9fdeb (diff) | |
| download | lwn-2a285299446cccbaf9ba47403e8f2ce578cd1ad1.tar.gz lwn-2a285299446cccbaf9ba47403e8f2ce578cd1ad1.zip | |
spi: dw-mid: convert to use DMAengine wrappers
Instead of direct dereference to dmaengine callbacks we are going to use
DMAengine wrappers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw-mid.c')
| -rw-r--r-- | drivers/spi/spi-dw-mid.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c index 7bdf93747e5f..a507add6231e 100644 --- a/drivers/spi/spi-dw-mid.c +++ b/drivers/spi/spi-dw-mid.c @@ -113,8 +113,7 @@ static void dw_spi_dma_done(void *arg) static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) { - struct dma_async_tx_descriptor *txdesc = NULL, *rxdesc = NULL; - struct dma_chan *txchan, *rxchan; + struct dma_async_tx_descriptor *txdesc, *rxdesc; struct dma_slave_config txconf, rxconf; u16 dma_ctrl = 0; @@ -132,8 +131,6 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) } dws->dma_chan_done = 0; - txchan = dws->txchan; - rxchan = dws->rxchan; /* 2. Prepare the TX dma transfer */ txconf.direction = DMA_MEM_TO_DEV; @@ -143,14 +140,13 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) txconf.dst_addr_width = dws->dma_width; txconf.device_fc = false; - txchan->device->device_control(txchan, DMA_SLAVE_CONFIG, - (unsigned long) &txconf); + dmaengine_slave_config(dws->txchan, &txconf); memset(&dws->tx_sgl, 0, sizeof(dws->tx_sgl)); dws->tx_sgl.dma_address = dws->tx_dma; dws->tx_sgl.length = dws->len; - txdesc = dmaengine_prep_slave_sg(txchan, + txdesc = dmaengine_prep_slave_sg(dws->txchan, &dws->tx_sgl, 1, DMA_MEM_TO_DEV, @@ -166,14 +162,13 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) rxconf.src_addr_width = dws->dma_width; rxconf.device_fc = false; - rxchan->device->device_control(rxchan, DMA_SLAVE_CONFIG, - (unsigned long) &rxconf); + dmaengine_slave_config(dws->rxchan, &rxconf); memset(&dws->rx_sgl, 0, sizeof(dws->rx_sgl)); dws->rx_sgl.dma_address = dws->rx_dma; dws->rx_sgl.length = dws->len; - rxdesc = dmaengine_prep_slave_sg(rxchan, + rxdesc = dmaengine_prep_slave_sg(dws->rxchan, &dws->rx_sgl, 1, DMA_DEV_TO_MEM, @@ -182,8 +177,8 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) rxdesc->callback_param = dws; /* rx must be started before tx due to spi instinct */ - rxdesc->tx_submit(rxdesc); - txdesc->tx_submit(txdesc); + dmaengine_submit(rxdesc); + dmaengine_submit(txdesc); return 0; } |